Side bearing for cars.



UNITED sTATEs i PATENT oEEIoE.

HUBERT M. PERRY, or CHICAGO, ILLINois, AssIeNoR To HENRY D.

.LAUGELIN or CHICAGO, rLLINors.

Specicationof Letters Patent.

Patented March 12, 1907.

Application led December 18, 1906 l Serial No. 848,414.

` .To all whom it may concern,.-

Be it known that I, HUBERT M. PERRY, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Side Bearings forCars,of which the following is a speciiication.4

This invention relates to improvements in side bearings for cars, andrefers more specifically to a side bearing of that type in which one ormore antifriction-rollers are mounted to traverse Ways in casing-frame,which latter is in turn secured either to the body of the car or truckbolsterin such manner that the periphery of the roller or rollers areadapted for engagement with the op-i posed member of the car structure.

Among the salient objects of the invention are to provide a constructionin which acentering-frame is mounted upon and arranged to reciprocatewith the roller or rollers and serves to constitute a caging for aspring which is compressed by the reciprocatory movements of the frame;to provide in a device Vcharacterized as` above a simple constructionin'which a single spring is made to serve as the means of centering therollers from both directions; to provide awside bearing the casing-frameof which is constructed in two parts separable from each other in a`longitudinal and vertically-disposed plane or line of separation,thereby facilitating the construction of the parts, theassemblement ofthe same, and rendering them more readily accessible in case it bedesired to take the bearing members apart; to provide a construction inwhich the disposition of the sprin with reference to the parts actedupon is suc as to secure or approximately secure equilibrium of action;to provide a construction in which'the ways upon which the rollerstravel are formed by wear-plates so arranged that they may be assembled.and secured in position with minimum trouble andV cost, and in generalto provide a simpliiied and improved construction of the characterreferred to.

To the above ends the invention consists in g they, mattershereinafterdescribed, and more particularly pointed out in the appendedclaims.

' In the accompanying drawing, Figure 1 is a horizontal sectional viewtaken on line 1 Lof Fig. 2 and looking downwardly. Fig. 2 ist alongitudinal sectional view taken on line 2 2 5 5 of Fig'. 1. Fig. 3 isa transverse sectional view on line 3 3 of Fig. l. Figs. 4 and 5 aredetails in side elevation and plan, respectively, of thecentering-frame. Figs. 6 and 7 i are side and end elevations of one ofthe movable spring-abutments.

Referring to the drawing, 1 and 1f -designate the two main castings,which together constitute the casing-frame of the device. These membersare yconstructed to fit to- 6'5 gether along a central longitudinalandvertically-disposed line which is curves toconform to an arc havingits radius from the centerof thev car-bolster, so that the casingframedivides in the centerplane of the mech- '7o anism contained therein.Each member is at each end provided with outstanding' flanges, as 2 and2',- arranged to register with each other and perforated to receiveunitingrivets. (Indicated in dotted lines at 3.) The. casing-framemembers are so shaped that when united they form an open-topfboxlikecasing the upper portion of whichhas interiorly-curved end walls 4 andthe bottom of which is formed by two horizontally-disposed wear-plates 5and 5, constituting ways upon which the antifriction-rollers travel,These wear-plates are mounted to rest upon the base portions 6 and 6 ofthe main castings and have their peripheral edges let into groovesformed in the respective casing members,4 as indicated at 7 and 7. Thewearplates probably lie in the 'same horizontal plane and extend thefull length o f the rollerboX, the end margins of the plates being alsolet into the grooves formed in the corresponding parts of the casingmembers, as indicated at 8, Fig. 2:

Between thdemeeting faces of the two main castings the parts thereofwhich lie 95 below the wear-plates are formed longitudinally-disposedregistering recesses, as 9' and 9', Fig. '1, which together form agroove or way Within. which extends and reciprocatesA the lowerportionof a centering-frame 10. Theend portions of this groove or way arenarrower than the central portion thereof, as indicated in dotted linesin Fig. 1, abrupt abutment-shoulders 9 being formed at tlie ends of thewider portion thereof. w

11 and 12v respectively designate the tw antifriction-rollers, whichrollers are of frustoconical shape. being taperedto correspond IOS IOO

" fremthegbolster-aids and arranged within y,thecasing--ame with theiraxes lin alnement Vand united, with each other by means ofa trunnion ofreduced axis member 2 13. Breferablyl the rollers '11 and 1 2 andthel*l'f'runnion connection therebetween are formed integrally with eachother but they may of course be separately formed and the trunnionmember: inserted'axially through the rollers'. ycentering-frame is ofsuch width and f tliickness as to iit easily but closely within the'space between the proximate ends of the two rollers', land lts upperortion is apertured` and 'constitutes a journa portion 14, which fitsup'on the trunnions of the rollers. This journal portion may be madewith a removjab'le journal-block 15, keyed in position, as indicated inFig. '4, ontheframel may be made of material such as malleable iron orysteel susceptible of being bent and t 4esides of the journal portionbent over to embrace thev trunnion, as indicated in Fig. 2. The lowerportion 15 of the centering-frame lconstitutes a s ring-cage, .and tothis' end takes theform o 'an opensided rectangular'elon- 5 gated' boxwithin which is seated the center-A 'mg-spring 16. The width orthickness of the `lower part of the centering-frame is less than thecomlinedwidth of the central main'porvainstorclosely approach theshoulders 9..

"J enever the rollers and connected centertions lof said-lo (see Figs. 1and 3 and the proximate edges of the wear-plates are constructed toapproach -closel .the sides of the centering-frame, so as to guide orconine the latter 'and overhang the --rec'esses 9 9, as shown clearly'mFig. 3.

In each end o f the cage lis mounted a mov- 'ablef abutment, as 17 17which is preferably socketed'to receive the'corresponding end of the.centering-spring; and in the central or normal position of t eing-frame are reciprocated in eitherdirection,- Ahowever 'that one ofthe abutments at the rear (consldered with reference to the directioliof movement ofthe roller) .is carried forwardly with `thecentering-frame, thereby compressing the spring Vagainst theVV oppositeabutment, which at this time is held'iminovlable by engagement with theo pos'ed shoulders 9. Vice versa, when' t e-.rollers are moved in the oposite direction the previously-movable a utment becomes stationary.land the othenabutment'serves to compress lthe' spring, thusv return. orcentering 'tudinal recesses 9,' and `9,

action 'of the spring upon the rollers inboth directions.

l claim as my invention- 1. A. side bearing comprising' a casingframe,an antifriction-roller mounted to roll upon a Way 1n said frame, anaxially-dis osed trunnion upon said roller a centermgame lconnected withthe trunnion of said roller and constructed to form a spring-cage, acoiled springarranged within said cage, and movable abutments engagingthe ends of the spring and coperating with the centeringframe and withstops on the casing-frame.

2. -A side bearing comprising a casingframe, a pair of' axiall -alinedantifriction- -rollers mounted to rol, upon Ways in said frame, atrunmonconnection between said rollers, a centering-frame journaled onsaid trunniongand provided with a cage portion, a v

centering-spring within said cage, movable abutments in the ends of saidcage, and projectingoutside the latter, there being sto shoulders on thecasing-frame, limitlng t e movement of the respective abutments in onedirection.

-3.'A .side bearing com rising a casing- '.frame, a pair of axially-ained antifrictionrollers mounted to rol upon ways in said frame atrunnion connection between the |rollers, a centering-frame journaled onsaid trunnion, extending laterally therefrom and provided with a cageportion located chieily below the ways upon which said rollers A travel,and between the-latter, guides'con- 'ining said centering-frametoato-and-fro movement with the rollers, a centeringspring arranged withinsaid cage and exten ing fromvend to end thereof, 'movable abutmentsarranged one in each end of said cage, there being lateral projectionsupon each abutment, coperating stop-shoulders formed in the respectivecasing-frame members, and

lguides upon said casing-frame members, ar-I ranged to confine saidmovable-abutmcnts to Jp-and-fro movements with the centeringame.

loo

4.' A side bearing comprising a main cas-- ing-frame, formed of twoseparately-formed members, rigidly united with .each othery along ajoint extending longitudinally ;and-` vertically ,throughout the lengthof the c asing there being re istering external flanges atthelrespective en s of said casing members, rivets or bolts extendingthrough said anges and rigidl uniting said members, an anti-dfriction-roller and spring centering mechanism arranged within saidcasing, and confining and retaining guides in said casing, within whichsaid centering mechanism operates,

and whereby the parts areA held in assembled and cooperative relation bythe union of the two casing members.

5. 4v. A, side bearing comprising a main' casing-frame, formed of.two-separately-forined members, :rigidly mii-.a1` with each cem' llalong a. joint extendin longitudinally and -`fertoally throughout telength of the casing, one or more Wear-plates seated inthe interior ofsaid easing and forming a bottom or Way upon which an antiriction-rollermay travel, the lateral and end margins of seid` Wear plate or platesbeing let'into grooves formed in the casing members and securedthereinby the union' of said casing members, and one or moreantiriotion-rollers arranged Within said casing and mounted to'traversesaid Wear `plete or plate `6'. A side-'besrilig comprising a mein oas,-v'Lng-frame, formed of two seperately-formed members, rigidlyunited WithY each other along a joint extending longitudinally and verticallythroughout the length yof the oas l in and provided with anlinternel Wayor ro ertraok, an antiriotionroller mounted to traverse said Way andlaterally-disposed guideways parallel with said roller-traek, whereby,when the parts are assembled and the cas1ng frame members united, theoperetive arts" are all thereby ooperatively eon-` fine and secured'.

vIn testimony whereof I hereunto afx my hand land seal this 28th day ofNovember,

' HUBERT M..PERRY. [L. s] Witnesses:

ALBERT H. GRAVES,

EMILIE ROSE

